Remove DOMAutomationController::automation_id_

content/browser/resources/media/client_renderer.js

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var ClientRenderer = (function() {
   var ClientRenderer = function() {
     this.playerListElement = document.getElementById('player-list');
-    this.audioPropertiesTable =
-        document.getElementById('audio-property-table').querySelector('tbody');
-    this.playerPropertiesTable =
-        document.getElementById('player-property-table').querySelector('tbody');
-    this.logTable = document.getElementById('log').querySelector('tbody');
+    var audioTableElement = document.getElementById('audio-property-table');
+    if (audioTableElement)
+      this.audioPropertiesTable = audioTableElement.querySelector('tbody');
+    var playerTableElement = document.getElementById('player-property-table');
+    if (playerTableElement)
+      this.playerPropertiesTable = playerTableElement.querySelector('tbody');
+    var logElement = document.getElementById('log');
+    if (logElement)
+      this.logTable = logElement.querySelector('tbody');
     this.graphElement = document.getElementById('graphs');
     this.audioPropertyName = document.getElementById('audio-property-name');
 
     this.players = null;
     this.selectedPlayer = null;
     this.selectedAudioComponentType = null;
     this.selectedAudioComponentId = null;
     this.selectedAudioCompontentData = null;
 
     this.selectedPlayerLogIndex = 0;
 
     this.filterFunction = function() { return true; };
     this.filterText = document.getElementById('filter-text');
-    this.filterText.onkeyup = this.onTextChange_.bind(this);
+    if (this.filterText)
+      this.filterText.onkeyup = this.onTextChange_.bind(this);
     this.clipboardDialog = document.getElementById('clipboard-dialog');
 
     this.clipboardTextarea = document.getElementById('clipboard-textarea');
-    this.clipboardTextarea.onblur = this.hideClipboard_.bind(this);
+    if (this.clipboardTextarea)
+      this.clipboardTextarea.onblur = this.hideClipboard_.bind(this);
     var clipboardButtons = document.getElementsByClassName('copy-button');
-    for (var i = 0; i < clipboardButtons.length; i++) {
-      clipboardButtons[i].onclick = this.copyToClipboard_.bind(this);
+    if (clipboardButtons) {
+      for (var i = 0; i < clipboardButtons.length; i++) {
+        clipboardButtons[i].onclick = this.copyToClipboard_.bind(this);
+      }
     }
 
     this.saveLogButton = document.getElementById('save-log-button');
-    this.saveLogButton.onclick = this.saveLog_.bind(this);
+    if (this.saveLogButton)
+      this.saveLogButton.onclick = this.saveLog_.bind(this);
 
     this.hiddenKeys = ['component_id', 'component_type', 'owner_id'];
 
     // Tell CSS to hide certain content prior to making selections.
     document.body.classList.add(ClientRenderer.Css_.NO_PLAYERS_SELECTED);
     document.body.classList.add(ClientRenderer.Css_.NO_COMPONENTS_SELECTED);
   };
 
   /**
    * CSS classes added / removed in JS to trigger styling changes.
@@ skipping 467 matching lines @@
 
       if (this.selectedPlayer) {
         removeChildren(this.logTable);
         this.selectedPlayerLogIndex = 0;
       }
     },
   };
 
   return ClientRenderer;
 })();